nano /etc/karakeep/karakeep.env   
                                                                                                                                         
SERVER_VERSION=0.24.1
NEXTAUTH_SECRET="UZO++hOAJll4jmHt6Jkytr7P"
NEXTAUTH_URL="http://localhost:3000"
DATA_DIR="/opt/karakeep_data"
MEILI_ADDR="http://127.0.0.1:7700"
MEILI_MASTER_KEY="RrR6Mz4dvCa0n1eE"
BROWSER_WEB_URL="http://127.0.0.1:9222"

# If you're planning to use OpenAI for tagging. Uncomment the following line:
# OPENAI_API_KEY="<API_KEY>"

# If you're planning to use ollama for tagging, uncomment the following lines:
OLLAMA_BASE_URL="https://aiapi.<my domain is here>.net"


# You can change the models used by uncommenting the following lines, and changing them according to your needs:
INFERENCE_TEXT_MODEL="mistral:latest"
# INFERENCE_IMAGE_MODEL="gpt-4o-mini" 

When I got to https://my.domain.net/api/model, i get the expected json output.  

If I set it to https://my.domain.net/ it does und_err_connect_timeout:
Jun 08 13:52:26 karakeep pnpm[5258]: TypeError: fetch failed
Jun 08 13:52:26 karakeep pnpm[5258]:     at node:internal/deps/undici/undici:13510:13
Jun 08 13:52:26 karakeep pnpm[5258]:     ... 8 lines matching cause stack trace ...
Jun 08 13:52:26 karakeep pnpm[5258]:     at async g (/opt/karakeep/apps/web/.next/server/chunks/3258.js:7:68) {
Jun 08 13:52:26 karakeep pnpm[5258]:   cause: TypeError: fetch failed
Jun 08 13:52:26 karakeep pnpm[5258]:       at node:internal/deps/undici/undici:13510:13
Jun 08 13:52:26 karakeep pnpm[5258]:       at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
Jun 08 13:52:26 karakeep pnpm[5258]:       at async L (/opt/karakeep/apps/web/.next/server/chunks/3258.js:19:52320)
Jun 08 13:52:26 karakeep pnpm[5258]:       at async z.processStreamableRequest (/opt/karakeep/apps/web/.next/server/chunks/3258.js:19:53793)
Jun 08 13:52:26 karakeep pnpm[5258]:       at async eB.runModel (/opt/karakeep/apps/web/.next/server/chunks/6815.js:1:31114)
Jun 08 13:52:26 karakeep pnpm[5258]:       at async eB.inferFromText (/opt/karakeep/apps/web/.next/server/chunks/6815.js:1:31849)
Jun 08 13:52:26 karakeep pnpm[5258]:       at async /opt/karakeep/apps/web/.next/server/chunks/6815.js:12:200
Jun 08 13:52:26 karakeep pnpm[5258]:       at async h.middlewares (/opt/karakeep/apps/web/.next/server/chunks/3258.js:4:46337)
Jun 08 13:52:26 karakeep pnpm[5258]:       at async g (/opt/karakeep/apps/web/.next/server/chunks/3258.js:7:68)
Jun 08 13:52:26 karakeep pnpm[5258]:       at async g (/opt/karakeep/apps/web/.next/server/chunks/3258.js:7:68) {
Jun 08 13:52:26 karakeep pnpm[5258]:     [cause]: ConnectTimeoutError: Connect Timeout Error (attempted address: ai.esworp.net:443, timeout: 10000ms)
Jun 08 13:52:26 karakeep pnpm[5258]:         at onConnectTimeout (node:internal/deps/undici/undici:2602:28)
Jun 08 13:52:26 karakeep pnpm[5258]:         at Immediate._onImmediate (node:internal/deps/undici/undici:2583:11)
Jun 08 13:52:26 karakeep pnpm[5258]:         at process.processImmediate (node:internal/timers:485:21)
Jun 08 13:52:26 karakeep pnpm[5258]:         at process.callbackTrampoline (node:internal/async_hooks:130:17) {
Jun 08 13:52:26 karakeep pnpm[5258]:       code: 'UND_ERR_CONNECT_TIMEOUT'
Jun 08 13:52:26 karakeep pnpm[5258]:     }
Jun 08 13:52:26 karakeep pnpm[5258]:   },
Jun 08 13:52:26 karakeep pnpm[5258]:   code: 'INTERNAL_SERVER_ERROR',
Jun 08 13:52:26 karakeep pnpm[5258]:   name: 'TRPCError'
Jun 08 13:52:26 karakeep pnpm[5258]: }

If I set it to the http://<ip address of lxc> it does an econnrefused 
Jun 08 13:48:33 karakeep pnpm[5173]: TypeError: fetch failed
Jun 08 13:48:33 karakeep pnpm[5173]:     at node:internal/deps/undici/undici:13510:13
Jun 08 13:48:33 karakeep pnpm[5173]:     ... 8 lines matching cause stack trace ...
Jun 08 13:48:33 karakeep pnpm[5173]:     at async g (/opt/karakeep/apps/web/.next/server/chunks/3258.js:7:68) {
Jun 08 13:48:33 karakeep pnpm[5173]:   cause: TypeError: fetch failed
Jun 08 13:48:33 karakeep pnpm[5173]:       at node:internal/deps/undici/undici:13510:13
Jun 08 13:48:33 karakeep pnpm[5173]:       at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
Jun 08 13:48:33 karakeep pnpm[5173]:       at async L (/opt/karakeep/apps/web/.next/server/chunks/3258.js:19:52320)
Jun 08 13:48:33 karakeep pnpm[5173]:       at async z.processStreamableRequest (/opt/karakeep/apps/web/.next/server/chunks/3258.js:19:53793)
Jun 08 13:48:33 karakeep pnpm[5173]:       at async eB.runModel (/opt/karakeep/apps/web/.next/server/chunks/6815.js:1:31114)
Jun 08 13:48:33 karakeep pnpm[5173]:       at async eB.inferFromText (/opt/karakeep/apps/web/.next/server/chunks/6815.js:1:31849)
Jun 08 13:48:33 karakeep pnpm[5173]:       at async /opt/karakeep/apps/web/.next/server/chunks/6815.js:12:200
Jun 08 13:48:33 karakeep pnpm[5173]:       at async h.middlewares (/opt/karakeep/apps/web/.next/server/chunks/3258.js:4:46337)
Jun 08 13:48:33 karakeep pnpm[5173]:       at async g (/opt/karakeep/apps/web/.next/server/chunks/3258.js:7:68)
Jun 08 13:48:33 karakeep pnpm[5173]:       at async g (/opt/karakeep/apps/web/.next/server/chunks/3258.js:7:68) {
Jun 08 13:48:33 karakeep pnpm[5173]:     [cause]: Error: connect ECONNREFUSED 192.168.100.208:80
Jun 08 13:48:33 karakeep pnpm[5173]:         at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1636:16)
Jun 08 13:48:33 karakeep pnpm[5173]:         at TCPConnectWrap.callbackTrampoline (node:internal/async_hooks:130:17) {
Jun 08 13:48:33 karakeep pnpm[5173]:       errno: -111,
Jun 08 13:48:33 karakeep pnpm[5173]:       code: 'ECONNREFUSED',
Jun 08 13:48:33 karakeep pnpm[5173]:       syscall: 'connect',
Jun 08 13:48:33 karakeep pnpm[5173]:       address: '192.168.100.208',
Jun 08 13:48:33 karakeep pnpm[5173]:       port: 80
Jun 08 13:48:33 karakeep pnpm[5173]:     }
Jun 08 13:48:33 karakeep pnpm[5173]:   },
Jun 08 13:48:33 karakeep pnpm[5173]:   code: 'INTERNAL_SERVER_ERROR',
Jun 08 13:48:33 karakeep pnpm[5173]:   name: 'TRPCError'
Jun 08 13:48:33 karakeep pnpm[5173]: }